The AMS8-2AA, similar in features and operation to the AMS8-2A is a compact two rack-unit aural and visual monitor designed to handle multi-channel format audio signals. Eight PPM/VU LED bargraphs display signal activity, while a sophisticated multi-speaker system allows operators to listen, with great clarity, to the signal being monitored. The AMS8-2A has four digital audio inputs (110 Ohm balanced inputs are on 3-pin pluggable screw terminal connectors and 75 Ohm unbalanced inputs are on BNC connectors) and four analog stereo inputs. An internal switcher allows the operator to toggle between the balanced and unbalanced AES inputs. A reference input for DARS is provided. This may be 110 Ohms, balanced, via a 3-pin pluggable screw terminal connector or 75 Ohms, unbalanced, via a BNC connector. The SERIAL COMM DB9 connector includes GPI and GPO inputs that may be used for tally and external control functions. AES re-clocked copies of the four input signals are provided on the rear panel. The signals are provided as both balanced, on pluggable 3-pin terminals, or unbalanced signals on BNC connectors. The unit provides an analog stereo output that is a copy of the signal being fed to the integral speaker system. This stereo output may be configured to follow the front panel speaker level control or to be a fixed line level output. The versatile AMS8 series monitors may be field configured to suit the monitoring needs of a particular operation or location, using a combination of the eight segment LED dot-matrix readout, the eight lighted pushbuttons and the two rotary shaft encoders with integral pushbutton switches. Ward-Beck has developed an intuitive scheme to ease programming of the AMS8 series monitors. Features that can be readily programmed to assist in monitoring include: Creating preset monitoring configuration, creating an infinitely variable proportional stereo mix-down of multiple audio channels, providing global control for monitoring and enabling voice-over on Dolby signals.